Sarah solved a quadratic equation. Her work is shown below, with Step 1 missing.What could Sarah have written as the result from Step 1?
2(x + 1)2 +6 = 134
Step 1
(x+1)2 – 64
Step 2
2+1 =18
Step 3
x = -9 or x = 7 Step 4
Khan academy quiz

Answers

Answer 1

Answer:

The missing step that Sarah has to write as the result of Step 1 will be 2(x + 1)² = 128.

What is the solution to the equation?

The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.

The equation is given below.

2(x + 1)² + 6 = 134

Simplify the equation, then we have

2(x + 1)² + 6 = 134

2(x + 1)² = 128

(x + 1)² = 128 / 2

(x + 1)² = 64

Take square root on both sides. Then we have

(x + 1) = ± 8

x = - 1 ± 8

x = - 1 - 8, - 1 + 8

x = - 9, 7

The missing step that Sarah has to write as the result of Step 1 will be 2(x + 1)² = 128.

More about the solution of the equation link is given below.

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Answer 2

Answer:

Answer:

c.2(x+1)^2=128

Step-by-step explanation:

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The Johnson family is going to build a new home. They need to have working drawings of their house plans created by a design firm. They will choose between Rock the House Digital Designs and Elegant Home Architects. Rock the House Digital Designs charges $500.00 for the initial consultation with the Johnson family, plus $50.00 for every additional hour of work for the house plans. Elegant Home Architects charge $75.00 per hour for the house plans. Let ℎ represent the number of hours for which the Johnson family hires the design firm. Which of the following statements are true? Select all that apply.

Can you guys help me please!

Answers

Answer:

Step-by-step explanation:

1.75 = 12.3 - x / 2.8

Solve for x

Answers

1.75=12.3-x/2.8
x=(12.3-1.75)2.8
x=29.54

1.75 = 12.3 - x / 2.81.75-12.3=-x/2.8

-10.55=-x/2.8

-10,55*-2.8=x

x=29.54

This is the problem:Brooke has to set up 70 chairs in equal rows for the class talent show.But ,there is not room for more than 20 rows.What are the possible number of rows that Brooke could set up?plz help what do i do

Answers

10 in each row, 7 in each row

Well you don't have to fill all 20 rows so you could just do 14 chairs in 5 rows and it would equal 70 chairs.

2n is greater than 14

Answers

The answer is n > 7. This is the answer

2n>14
divide by 2 on both sides.
n=7

Spencer is designing the interior of a house. The length of one room is twice as long as it's width

Answers

Final answer:

The subject of this question is Mathematics at a High School level. The length of the room is twice the width.

Explanation:

The subject of this question is Mathematics and it is at a High School level.

Step 1: Define the variables

Let the width of the room be represented by w.

Then, the length of the room would be 2 times the width, so it can be represented as 2w.

Step 2: Set up an equation

Since we know that the length is twice the width, we can write the equation:

2w = l

Step 3: Solve for the length

To find the length, we substitute the value of the width into the equation:

2w = 2 * w

l = 2w

So, the length of the room is twice the width.

Learn more about Interior design

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L=w+w so W*2=L. i’m gonna need some numbers but that’s the basic equation

A football is kicked toward an end zone with an initial vertical velocity of 30 ft/s. The function h(t) = -16+ 30t models the height h (in feet) of the football at time t (in seconds). Which statement about the height of the football is true?A. The football does not reach a height of 15 feet.
B.The football reaches a height of exactly 15 feet.
C. The football reaches a height that is greater than 15 feet.

Answers

Answer:

Step-by-step explanation:

Final answer:

The football reaches a height of exactly 15 feet.

Explanation:

The height of the football at time t can be found by plugging the value of t into the function h(t) = -16t + 30t. To determine if the football reaches a height of 15 feet, we can set the function equal to 15 and solve for t.

15 = -16t + 30t

15 = 14t

t = 15/14

Since t is positive, it means the football reaches a height of 15 feet at some point, so the correct statement is The football reaches a height of exactly 15 feet.